Best for indices and tracker funds?

Hi

I trade ETFs only using Etrade US.

I am interested in trying spread betting and wondered which company offer the best coverage of major indices and ETFs (e.g. EWS - Singapore, EWM - Malaysia)? Please note I am not all interested in individual stocks, currencies, commodities, ... indices and tracker funds only.

I have tried Finspreads and IG Index and the latter has a fairly good coverage.

Thanks